/**
 * Copyright (C) 2008-2012 Matt Gumbley, DevZendo.org <http://devzendo.org>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.devzendo.shell.interpreter

final class Variable {
    private val store = scala.collection.mutable.ArrayBuffer[AnyRef]()
    def size(): Int = {
        store.synchronized {
            store.length
        }
    }

    def add(obj: AnyRef) {
        store.synchronized {
            store += obj
        }
    }

    def get(index: Integer): AnyRef = {
        store.synchronized {
            store.apply(index)
        }
    }

    def get: List[AnyRef] = {
        store.synchronized {
            store.toList
        }
    }

    def close() {
        store.synchronized {
            store.clear()
        }
    }

    def asList(): List[AnyRef] = {
        store.synchronized {
            store.toList
        }
    }
}
